Diagnostic value of ultrasound in lymphatic metastasis of thyroid papillary carcinoma

Abstract

Objective To explore the characteristics of ultrasonography of thyroid papillary carcinoma and normal ultrasound and its significance to determine whether there is a cervical lymph node metastasis. Methods A total of 80 cases with thyroid papillary carcinoma in our hospital from September 2014 to September 2017 were selected as the research object.According to the results of postoperative pathology, the patients were divided into the neck lymph node metastasis (LNM) and without LNM group.All patients received preoperative normal ultrasound and contrast-enhanced ultrasound examination, the characteristics were summarizd and compared. Results Histopathology results showed that 45 cases of 80 patients had cervical LNM and 35 cases were not associated with cervical LNM.In LNM group, the contrast agent in cancer nodules was one case, which in the non-LNM group was 4 cases, the difference between the two groups was significant(Z=2.991, P 0.05). The RI difference of the LNM group was (0.12±0.04), which was significantly higher than (0.05±0.02) of the non-LNM group, the difference was statistically significant (t=2.271, P=0.021). Conclusion Conventional ultrasound and contrast-enhanced ultrasound have important value in predicting cervical lymph node metastasis of thyroid papillary carcinoma. Key words: Thyroid neoplasms; Lymphatic metastasis; Ultrasonography